How many hairs are there in Gretchen the gorillas right armpit? Statistical or Not statistical

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48